Improvement in steam-generators



A. VAN HORN.

S'TEAM GENERATOR. No.188f9-90. Patented March 27,1877.

MPETERS, PHOTO-LIThOGRAPNER, WASHINGTON o c,

UNITED STATES PATENT OFFICE.

ABNER VAN HORN, OF BROOKLYN, E. D., N. Y., ASSIGNOR OF TWO-THIRDS OF HISRIGHT TO ANDREW VAN HORN AND HENRY BARAGWANATH,

OF SAME PLACE.

IMPROVEMENT lN STEAM-GENERATORS.

Specification forming part of Letters Patent No. 188,990, dated March27, 1877; application filed February 3, 1877.

To all whom it may concern 7 Be it known that I, ABNER VAN HORN, 0Brooklyn, E. D., Kings county, and State of New York, have invented anImproved Steam- Generator, of which the following is a specification:

The nature of my invention consists in combining with the furnace abovethe fire-pot a steam-generator surrounded by one or more coils of pipes,connected at their lower ends to the water jacket surrounding thefire-pot, and at their upper ends to the uper end of thesteam-generator, whereby the wet steam is converted into dry steambefore escaping from the generator to the building for heating purposes.

But to describe my invention more particularly, I will refer to theaccompanying drawings, forming a part of this specification, the sameletters of reference, wherever they occur, referring to like parts.

Figure 1 is a vertical cutsectional view of the steam-generator. Fig. 2is a plan view of the same, through the line an ac, Fig. 1.

Letter A represents the base of the furnace, and B the fire-pot, and Othe grate. The firepot is made of iron, with double-walled sides, so asto leave a space between them, as shown at D. This space is intended tobe filled with water from the feedwater box E, or any other water-supplysuitable for the purpose.

The object of this is, first, to absorb the heat escaping from the sidesof the fire-pot; and, second, to prevent the burning out of the sides ofthe fire-pot, as would be the case if not thus protected. The water,thus heated by the fire-pot, is then carried up into two or more, orless number of, independent pipes, F F, coiled around a steam-generator,G, and at its upper end discharged therein. This steamgenerator is madeof iron, and of proportionate diameter and length to that of the wallsof the furnace H above the fire-pot. By this arrangement the water inthe pipes is subjected to the heat of the fire-pot, and thus afi'ords ahotwater supply to them; secondly, the pipes being arranged Within thefurnace directly over the fire-pot, the water in them is quicklyconverted into steam, thus admitting of the use of a less amount of fuelthan if not thus arranged and previously heated; and, thirdly, the wetsteam thus generated in the coiled pipe or pipes, as may be the case,being discharged into the steam-generator surrounded by the coils ofpipe, and directly above the fire and centrally of the furnace, is atonce converted into high pressure or dry steam. In this condition itwill be obvious that it may be carried through heating-pipes andradiators to almost any distance, as there would be but little water tocondense in proportion to the great amount of heat given out by theradiators.

Having now described my invention, I will proceed to set forth what Iclaim and desire to secure by Letters Patent of the United States 1. Inasteamheater, the combination of the steam-generator G with the coil orcoils of pipe F, surrounding the same, substantially as described, andfor the purposes set forth.

2. In a steam-heater, the combination of the Water-supply box E,water-tight compartment D of the fire-pot B, coil or coils of pipe F,and steam-generator G, constructed and arranged substantially asdescribed.

ABNER VAN HORN.

Witnesses:

CHARLES L. BARRITT, ANDREW VAN HORN.

